Math, asked by khushbooshaikh14, 5 months ago

If cosec 18 =sec 2A, then

Answers

Answered by Anonymous
11

cosec(18º)=sec(A)

1/sin(18º)=1/cos(A) i.e.

sin(18º)=cos(A)

sin(18º)=sin(90º-A) So

18º=90º-A

A=90º-18º=72º

Ans=72º

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